Closure for pipes, valves, and other vessels



1 v- Filed Vhay s, 1920 ToaZZ whom t may concern.'

i a full, true, and exact description thereof.k

Patented Jan. 1.9, 1926.

UNITED) strates HORACE eHARLEs Nixon, er sAsxATooN, sAsxA'rCHEWAN, CANADA.

CLosUnE Fon rrrns, vALvEs, AND o'rrrnn vnssELs.

Application filed May` 3,

Be it known that I, rHORACE C. a citizen of` Canada, residing at the city of Saskatoon, in the Province of Saskatchewan, in the Dominion of Canada, haveinvented Certain new and useful Improvements in Closures for Pipes, Valves, and other 1 Vessels, `do hereby declare that lthe following is This invention relates to improvements in `pipe closures.

Among the objects ofthe inventionis to provide a novel form of pipe closure adapted to be associated with drain pipes,

`cylinders or the like; which will serve to make a tight closure for the associated pipe or cylinder which may be quickly operated to open the pipe; and which isexceedingly Simple in construction and inexpensive to, manufacture. i i

vIt is an important object 4of the invention i i that lthe threads employed in `connection vwith the closure be `insulated by a double metallic seal from gases or fluids or vapors which `may be within the pipeor f article for which 'the presentinvention forms a closure, thus to ensure that said threads will be maintained in good condition.

Otherobjects and objects relating to details of construction, combination and arrangen'ient of parts will hereinafter appear in the detailed description to follow.

rlhe invention is illustrated by way of example in the accompanying drawings, in which z- Figure l is a vertical sectional view showing the present invention when the parts thereof are fully assembled and associated with a. pipe, said pipe being shown in dotted lines,

Figure 2 is a top plan view of the same,

Figure il@ is a perspective view of the retaining cap,

Figure `8 is a group view illustrating sectional views of the retaining cap, plate closure and pipe, respectively,

Figures ffl, 5 and (i are different forms ol pipe sections which may be employed.

Referring to the drawings generally, l indicates a plate closure, 2 a ferrule or pipe section and 3 a retaining cap.

More particularly the plate closure l consistsfin a disk like plate having its upper face formed with an annular flange, as shown in `the drawings, and from the upper edge of ysuch flange there extends an integral Nixon, 1

1920. Serial No. 378,540.

as shown and adapted to form an annular recess or cone frustum'shaped groove 5 with the periphery of the plate closure l. The periphery of the plate closure is preferably l annularlip 4 which is curved downwardly slightly tapered as best shown in Figure 3.

Vith respect to the ferrule or pipe section 2 it is to be understood that `the same 1s shown merely` to illustratethe end of a pipe for which the present invention may form a closure. This pipe section maywbelseparately provided as illustrated and then suitably connected with the end of a pipe to be closed in any manner desired such as soldering, as provided by the form illustratedin F igure 4. or by threaded connection as shown inw Figures 5 and 6. Also the pipe section `may be formed upon a receptacle and communicate with the interior thereof. In either invention is not to `be limited to any particular constructionof ferrule or pipe section. In the present instance, in Figure l, an elongated ferrule or pipe section is shown, the 4upper end being tapered and rounded at the edge event it is to be understood that the present andscrew threaded below the tapered pori tion as at 10, Figure 4. The Figure 4 represents an end 'portionfof the pipe section shown in Figure l. `In Figure| 5. the pipe section is shown of considerable less length and threaded interiorly as at 8 so that the same may be threaded upon' the end of a pipe. In Figure 6 the pipe section is exteriorly threaded so that the same maybe threaded into a pipe. Also a bead is formed about the exterior thereof as at 9. The threads l() in each of the Figures 3, a and 5 are similarly tapered, that is, below the base line of the tapered portion.

y The retaining cap C is interiorly threaded as at l2, the threads 12 being complemental to the threads 10 of the pipe section 2. The threads 12 do not extend the entire depth of the cap, but as shown in Figure 3, the space existing between the threads l2 and the upper wall of the cap is an annular curved recess as indicated by the reference numeral 7, and designed to receive the annular lip et.

The retaining cap 3 has its upper edge formed with a plurality of radial notches to provide the lugs or extensions 3 as shown in Figures l and 3, whereby to apply a wrench or other means for positioning or removing the cap.

In assembling the present, pipe closure the plate 1 is positioned as shown in Figure 1 of the drawings. The associated end of the ferrule or pipe section 2 should be beveled as shown in the difl'erent views of the drawings, and the periphery ol the plate closure 1 should be complementa] to said bevel in order to make a tight fitting and seal on the inside of the tapered end. The threads 10, in each instance, do not extend to the associated end of the ferrule or pipe section 2 and this unthreaded tapered end of the pipe extends into the groove or recess 5 of the plate closure. The retainer cap 3 may now be threaded upon the pipe section 2 and in this way the plate closure 1 is securely held in position, providing a double met-allie seal.

As is obvious the lip l carried by the plate closure 1 serves the function of further insuring that no gas or liquid may leak to the co-operating threads of the cap and pipe section, as it completely fills the annular recess 7 in the cap. The cap may be easily removed When desired which is of eonsiderable importance in case of an emergency Where it is necessary to quickly open a pipe or other article equipped with the present closure.

I claim:

1. A closure of the character described comprising a tubular metal member having one end beveled off in opposite directions providing a double tapered terminal and exteriorly threaded below said beveled portion, a plate closure for said end comprising a metal disc having an annular flange projecting from its upper face at its periphery, the outer face of said flange tapered to fit tightly Within the tapered end of the tube, an annular lip oppositely tapered and pendent from the upper edge ot' said flange p and adapted to tit fluid light over the outer taper of said end, and an internally threaded metallic cap adapted to engage the said exterior-ly threaded portion, aud engage and secure the plate closure in position to form an inner and outer seal of the tapered end.

2. A pipe closure olf the character described comprising in combination, a ine tallic pipe section having one end inwardly and outwardly bevelled to 'forni a double tapered edge and extcriorly threaded below said tapered edge, a plate closure for said end consisting of a metallic dise adapted to fit fluid tight Within said end and having an outwardly inclined annular overllanging lip at its periphery adapted to lit fluid tight on the outer tapered face ol said pipe tion, and a cap member having an annular flange extending therefrom, said flange internally threaded adjacent its outer end and adapted to engage the exteriorly threaded portion of the tapered end ol? the pipe ser: tion, said flange having an internal annular recess to receive and house said annular lip. said cap adapted to be threaded on the pipe end to force and secure the plate closure in position to 'form an inner and outer seal between the interior of the 'ferrule or pipe section and the said exterior' threads.

3. A closure as set forth in claim 1, the cap member provided on its outer face with a circular series of adial notches 4For the purpose set forth.

HORACE CHARLES NIKON. 

